EP 1682478 A1 20060726 - LONG-LIFE METHOD FOR HETEROGENEOUSLY-CATALYSED GAS PHASE PARTIAL OXIDATION OF PROPENE INTO ACRYLIC ACID
Title (en)
LONG-LIFE METHOD FOR HETEROGENEOUSLY-CATALYSED GAS PHASE PARTIAL OXIDATION OF PROPENE INTO ACRYLIC ACID
Title (de)
VERFAHREN ZUM LANGZEITBETRIEB EINER HETEROGEN KATALYSIERTEN GASPHASENPARTIALOXIDATION VON PROPEN ZU ACRYLSÄURE
Title (fr)
PROCEDE LONGUE DUREE D'OXYDATION PARTIELLE EN PHASE GAZEUSE A CATALYSE HETEROGENE DE PROPENE EN ACIDE ACRYLIQUE
Publication
Application
Priority
- EP 2004012173 W 20041028
- US 51565903 P 20031031
- DE 10351269 A 20031031
Abstract (en)
[origin: WO2005042459A1] The invention relates to a long-life method for two-stage heterogeneously-catalysed gas phase partial oxidation of propene into acrylic acid. According to said method, the temperature of the fixed catalyst beds is increased overtime; the gas phase partial oxidation is interrupted from time to time and, when the temperature of said fixed catalyst beds is increased, a gas mixture, containing oxygen, is led through the fixed catalyst beds.
IPC 8 full level
C07C 51/25 (2006.01); C07C 57/04 (2006.01)
CPC (source: EP KR)
C07C 51/16 (2013.01 - KR); C07C 51/25 (2013.01 - KR); C07C 51/252 (2013.01 - EP)
Citation (search report)
See references of WO 2005042459A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005042459 A1 20050512; BR PI0415989 A 20070109; BR PI0415989 B1 20160329; EP 1682478 A1 20060726; EP 1682478 B1 20160511; JP 2007509884 A 20070419; JP 4571146 B2 20101027; KR 101115085 B1 20120313; KR 20060097728 A 20060914; MY 139342 A 20090930; RU 2006118606 A 20071210; RU 2374218 C2 20091127
DOCDB simple family (application)
EP 2004012173 W 20041028; BR PI0415989 A 20041028; EP 04790946 A 20041028; JP 2006537182 A 20041028; KR 20067008453 A 20041028; MY PI20044486 A 20041029; RU 2006118606 A 20041028